Home / 1,998.32-2,755.80-1,251.23

Finding the Fourth Proportional to 1,998.32, 2,755.80 and 1,251.23

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Solution

The fourth proportional to 1,998.32, 2,755.80 and 1,251.23 is: 1,725.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,998.32 : 2,755.80 = 1,251.23 : x
  2. Step 2: Convert to fraction form
    1,998.32/2,755.80 = 1,251.23/x
  3. Step 3: Cross multiply
    1,998.32x = 2,755.80 × 1,251.23
  4. Step 4: Simplify right side
    1,998.32x = 3,448,139.63
  5. Step 5: Solve for x
    x = 3,448,139.63/1,998.32
  6. Step 6: Final answer
    x = 1,725.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.